United Airlines announced that it has inked a multibillion-dollar deal to purchase 50 new aircraft from Airbus to replace its aging fleet of Boeing planes. The U.S. carrier said Tuesday that it has made an order for 50 new Airbus A321XLR planes in order to begin retiring its existing fleet of Boeing 757-200 aircraft with expectations to start introducing the European-made long-range jets into its international service by 2024. The ...